Physico-chemical characterization, thermal decomposition and kinetic modeling of Digitaria sanguinalis under nitrogen and air environments

Balogun, Ayokunle O.; Adeleke, A. A.; Ikubanni, P.P.; Adegoke, Samuel Oluwafikayo; Alayat, Abdulbaset M.; McDonald, Armando G.

doi:10.1016/j.csite.2021.101138

Cited by 10 publications

(4 citation statements)

References 46 publications

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“…The overall weight losses are B (25%), C (38%), G (98%), M (60%), P (95%), S (90%) and W (80%). G possessed the highest weight loss after undergoing exothermic thermal decomposition at different pyrolysis temperatures closely followed by P. Hence, ANG is more suitable for the pyrolysis pro-cess among the samples reviewed next to P, S, and W respectively as the rate of weight loss is proportional to the energy released [25]. Table 4 shows the influence of heating rates on devolatilization parameters.…”

Section: Structural Composition Analysismentioning

confidence: 99%

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Characterization of lignocellulose biomass based on proximate, ultimate, structural composition, and thermal analysis

Onokwai

Ajisegiri

Okokpujie

et al. 2022

Materials Today: Proceedings

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Section: Structural Composition Analysismentioning

confidence: 99%

“…Rajamma et al [24] emphasized the need to investigate the thermal degradation and decomposition behaviour of biomass before selecting them for thermochemical conversion to enhance their yields. TGA curve shows the weight loss as a function of temperature [25,26] and a distinct characteristic such as the thermal behavior of biomass [27].…”

Section: Introductionmentioning

confidence: 99%

Characterization of lignocellulose biomass based on proximate, ultimate, structural composition, and thermal analysis

Onokwai

Ajisegiri

Okokpujie

et al. 2022

Materials Today: Proceedings

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“…The hemp fiber had the lowest Tonset of 314 °C followed by hop (323 °C) and pine (335 °C). The fibers degraded over a 250 to 450 °C range, and this is common for lignocellulosic fibers [40]. The composites samples showed two onset temperatures, the first (Tonset1) associated with fiber degradation (324-354 °C) and the second (Tonset2) associated with HDPE decomposition (512-514 °C).…”

Section: Capillary Rheologymentioning

confidence: 94%

Evaluation of the Mechanical, Thermal and Rheological Properties of Hop, Hemp and Wood Fiber Plastic Composites

Talcott,

Uptmor,

McDonald

2023

Materials

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The aim of this study was to evaluate the use of waste natural fibers from milled hop bines and hemp stalks, without chemical treatment, and compare them to a commercial wood fiber for use in wood–plastic composite (WPC) materials. The fibers were characterized (density, fiber size and chemical composition). WPCs were produced by the extrusion of a blend of fibers (50%), high-density polyethylene (HDPE) and coupling agent (2%). The WPCs were characterized for their mechanical, rheological, thermal, viscoelastic and water resistance properties. Pine fiber was about half the size of hemp and hop fibers and thus had a higher surface area. The pine WPC melts had a higher viscosity than the other two WPCs. Additionally, the tensile and flexural strengths of the pine WPC were higher than those of hop and hemp WPCs. The pine WPC was also shown to have the least water absorption followed by hop and hemp WPCs. This study highlights that different lignocellulosic fibers influence their WPC properties. The properties of the hop- and hemp-based WPCs were comparable to commercial WPCs and can be improved by further milling/screening the fibers to a smaller particle size (volumetric mean of ~88 μm) to increase their surface area, fiber–matrix interactions and improve stress-transfer.

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“…Rajamma et al (2009). emphasized the need to investigate biomass's thermal degradation and decomposition behaviour before selecting them for thermochemical conversion to enhance their yields.Thermogravimetric analysis (TGA) helps to determine the weight loss of the biomass samples as a function of temperature (Balogun et al, 2021) and a distinct characteristic such as the thermal behavior of biomass (Gajeraa et al, 2020). Ozyuguran et al (2018) opined that HHV is not only utilized for the design and operation of biomass conversion system but also aid the selection of biomass as fuel for the thermochemical conversion process.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Lignocellulosic Biomass Samples in Omu-Aran Metropolis, Kwara State, Nigeria, as Potential Fuel for Pyrolysis Yields

Onokwai

Okokpujie

Ajisegiri

et al. 2022

Int. J. Renew. Energy Dev.

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This study deals with a preliminary investigation of biomass samples' physicochemical, structural composition, and thermal properties to aid the appropriate selection of biomass utilized for pyrolysis operation. The proximate, ultimate, structural composition and thermal analyses were conducted using seven lignocellulose biomass samples obtained in Ajase market, Ajasse Ipo, Kwara State, Nigeria, and Omu-Aran, Kwara State, Nigeria. Results showed that the average moisture contents (MC) ranged from 0.12 to 0.44%, and volatile matter (VM) ranged from 73.70 to 83.82%. Fixed carbon (FC) varied from 12.79 to 22.80%, and Ash contents varied between 01.20 to 5.52%. Similarly, the average carbon contents ranged from 45.11 to 50.00%. Hydrogen contents ranged from 5.38 to 6.15%, nitrogen contents varied between 0.20 to 1.24%, and oxygen contents from 43.79 to 48.51%. Also, sulphur contents varied between 0.01 to 0.19%, while the biomass species' average cellulose, hemicellulose, and lignin contents ranged from 28.34 to 45.80%, 25.83 to 34.01%, and 21.96 to 49.63% respectively. The high percentage of VM, C, H, HHV, ignitability index, cellulose, and hemicellulose content recorded in the biomass samples would enhance devolatilization reactivity, ignitability, and burn gases in the reactor, as well as a good production of hydrocarbons content during the pyrolysis process. Also, the low ash content would prevent harmful chemical deposits in the reactor during the pyrolysis process. It can be deduced that shea butter wood was best suited for biofuel generation, closely followed by sugarcane bagasse and palm kernel shell. At the same time, corn cobs possessed the least properties for the pyrolysis process.

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Physico-chemical characterization, thermal decomposition and kinetic modeling of Digitaria sanguinalis under nitrogen and air environments

Cited by 10 publications

References 46 publications

Characterization of lignocellulose biomass based on proximate, ultimate, structural composition, and thermal analysis

Characterization of lignocellulose biomass based on proximate, ultimate, structural composition, and thermal analysis

Evaluation of the Mechanical, Thermal and Rheological Properties of Hop, Hemp and Wood Fiber Plastic Composites

Characterization of Lignocellulosic Biomass Samples in Omu-Aran Metropolis, Kwara State, Nigeria, as Potential Fuel for Pyrolysis Yields

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